Osburn STRATFORD II OB04007 Installation And Operation Manual page 58

Installation rules and advice
• Do not connect the hot air ducts to a central heating system. The malfunction of the heating system
would overheat the fireplace.
• Do not use insulated flexible ducts as they may overheat.
• Do not use «T» fittings or anything other than those listed below.
• The hot air outlets can be installed in the same room as the fireplace or it can be installed in a room
upstairs.
• When forced air kit is installed in conjunction with a gravity kit, the forced air device will draw some
of the air from the gravity kit ducting, therefore reducing its efficiency.
Clearances
• There shall be a clearance of at least 12" (305 mm) between the hot air outlet frame and a ceiling,
side wall or mantle made of flammable material.
• When the duct passes through a wall or floor made of flammable material, a firestop radiation shield
(same as the one used for a class A chimney) must be installed in the opening of the wall or floor.
There must be a clearance of at least 2" (50 mm) between the ducts and the firestop.
Page 58
12" MIN.
12" MIN.
13" X 13"
330mm X 330mm
Installation and Operation Manual - Stratford II